Fox Ranch, outside Yuma County, Colo., is a 14,000-acre nature preserve and working cattle ranch owned by The Nature Conservancy. The ranch is an experiment in planned grazing, which aims to improve soil health and help ranchers' bottom lines. Luke Runyon/Harvest Public Media hide caption

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Rancher Denny Johnson looks over his cattle in Joseph, Ore., in 2011. Conservationists say ranchers raising beef cattle are responsible for the decline of some wildlife. Rick Bowmer/AP hide caption

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Young broilers nibble feed at a chicken farm in Luling, Texas. The Food and Drug Administration has issued new guidance on how drug companies label antibiotics for livestock. Bob Nichols/USDA/Flickr hide caption

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Drug Companies Accept FDA Plan To Phase Out Some Animal Antibiotic Uses
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Russ Kremer with some of his hogs on his farm in Frankenstein, Mo., in 2009. Instead of buying conventional feed, Kremer grazes his hogs in a pasture, and grows grains and legumes for them. Jeff Roberson /AP hide caption

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A truckload of live turkeys arrives at a Cargill plant in Springdale, Ark., in 2011. Most turkeys in the U.S. are regularly given low doses of antibiotics. Danny Johnston/AP hide caption

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Antibiotic-Resistant Bugs Turn Up Again In Turkey Meat
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Cows wait to be milked at a California dairy farm. Justin Sullivan/Getty Images hide caption

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Only Luxembourgers eat more meat per person than Americans. iStockphoto.com hide caption

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A Nation Of Meat Eaters: See How It All Adds Up
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Men at a slaughterhouse stand near hanging beef carcasses, late 1940s. Lass/Getty Images hide caption

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The Making Of Meat-Eating America
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The FDA's latest effort to end the use of antibiotics as growth promoters in animals is getting mixed reviews from activists. Rob Carr/AP hide caption

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FDA Launches Voluntary Plan To Reduce Use Of Antibiotics In Animals
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Pigs take a mud bath at the De Jofrahoeve pig farm in Esch, Netherlands. Dutch farmers treat their animals with almost three times the antibiotics that their Danish neighbors use. Robin Utrecht/AFP/Getty Images hide caption

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Breeding sows in crates at a subsidiary of Smithfield Foods in 2010. The photo was shot by the Humane Society as part of an undercover investigation. Humane Society/Associated Press hide caption

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